Apparatus for building circular walls and means for adjusting the apparatus.



A. Q. NASH.

APPARATUS FOR BUILDING CIRCULAR WALLS AND MEANS FOR ADJUSTING THEAPPARATUS. APPLICATION FILED APR. 25, 1914.

1,127,369. Patented Feb. 2, 1915.

2 SHEETS-SHEET 1 2s 2 ze 24u 22 A. Q. NASH, APPARATUS FOR BUILDINGCIRCULAR WALLS AND MEANS POR ADISTIIIG THE APPARATUS. APPLICATION FILEDAPR. 25. 1914.

' 1,127,369. www@ Feb 2, 1915,

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'narran strasse rainer oei-rios.

LEXANDEB Q. NASH, 0F BELTDN, TEXAS.

APPARTUS EUR BILDING CEBCLAH WALLS ANB MEANS FR ADJUSTING- THEAPPKRATUS.

llpeclcation of Letters atent.

Messes.

rasantes rieb. 2,1915.

Application nled .lipril 25, 1911.1. .Serial No. e.

To all whom may concern.'

Be it known that I, ALEXANDER Q. NASH, a citizen of theUnited States,residing at Belton, in the county of Bell and State ot T exas, haveinvented certain new and useful Improvements in Apparatus for BuildingCircular Walls and Means for Adjusting the Apparatus, of which thefollowing is a specification.

My invention relates to scali'old adjusting apparatus, and particularlyto means :for elevating and lowering scafolds for building circularWalls for silos, circular tanks, smoke stacks, and similar circularwalls, and the object is to provide means for moving easily a scaffoldas a Wall is built up and for holding the scalold rigid while beingnioved and when located at any desirable height and for strutting thescaffold against the portion of the wall which is completed and forraising or elevating the forms used in building the Walls and for truingthe forins to a. true or correct circle so that the wall will beperfectly cylindrical and iigidand plumb throughout its length and toina-ke the scaffold perfectly safe and rigid so that .workmen will notbe disturbed by a shaking structure. K

Another object is to provide a scaffold with extensible arms so that ascaffold can be suspended on the outside of the Wall. Une advantage isthat the scaffold. is adjustable or extensible so the scaffold can berigidly braced in different sizes of structures.

Other objects and advantages will be fully explained in the followingdescription and the invention will be more particularly pointed out inthe claims.

Reference is had to the accompanying drawings which forni a part of thisapplication.

Figure l is an elevation of the apparatus with one half of the scaii'oldremoved, show ing the holding castings in section. Fig. 2 is a plan viewof the lower part of a scadold, showing the relative arrangement of thescaii'old to the wall which is being built. Fig. 3 is a detail view ofthe lower connection of the derricl to the central mast. lTig.v

l is a plan view of the saine. Fig. is a detail view .of the lock forthe hoisting cable. VFig. G is a detail view'of a hoisting and dumpingbucket. Fig. 7 is another sidel eleva-tion ot the hoisting and dumpingbucket, showing the device for locking the bucket against tilting. Fig.8 is a detail i.

view of tlielovver connection of theA scaffold with the central mast.view ofthe upper connection of the scaffold with-the central mast.. Fig.1.0 is a detail.

view of the upper connection of the ,derrick Fig. 9 is a detail toindicate Vthe same ,parts throughout the several views.

`'lhe drawings show a portion of a circular wall l which is being built,and portions 2 of the forms which are used for building the wall. A.centra-lmast 3 is set on a suitable base Il at the center of-the circleof the `Wall. The scad'oldis built on an upper casting 5 and a lowercasting 6. Each casting has a plurality of grooves 7 radially arrangedand has a central opening 8 for the mast. Aoplurality nt radial arms 9are mounted. in the .grooves 7. A plurality of radial arms 10 aremounted in similar grooves in casing 5. T-pipes 11 are mounted on theouter ends oir' the arms 9 and 10. '.ihearnis 9 and 10 are referablymade of pipe. The outer ends or the pipes 9 `and- 10 are provided withvertical braces 12 which are screwed into the T-pipes 11 and the arnis 9and 10 are further braced by .the diagonal braces 13, thus lorrning atruss of the upper and the lower arm. The lbraces 12 and 13aiepreferably made of pipe. The object is to make the scabld as light aspossible. The arms 9 and 10 may be provided vvithsleeves 14 formakingvthe arms 4 longer or shorter. -The braces I3 may be provided withsleeves 15 for adjustment of the braces. At their upper ends the braces13 are bolted to the arms 10 near the T- pipes l1 and at their lowerends they are`4 bolted to the inner ends of the arms Bend the`bolts 16extend through the casting 6. The inner ends of the arnis 9 .arev boltedt0 the casting 5 by bolts .17., through holes 17 The hubsor castings 5land are spaced, apart by braces, consisting of pipes 18 spacing thecastings apart and rods 19 which run through the pipes 18 andthrough theopenings 20 in the casings. The rods 19 have heads on 4one endandniits21en the i rods by hooks 28. See Fig. 13.

A the same on the mast by bolts 39.

other` ends. Boards 22 may be placed on the arms 9 and l0 to formplatforms. The

`arms 9 and '10 are adjusted to the wall 1 and to ther forms 2 byadjusting struts 23 which are threaded and provided with nuts 24. 'Totighten thestruts against th'e wall or forms, turn the nuts 24 whichwill bear against the ends of the rods 9 and 10 and ,push the struts outagainst the ,walll 1 and the .forms 2. For forming a scaffold on theoutside of the wall, the struts 23 may be replaced by rods 25 which arescrewed or telescoped into the arms 10. Cables or rods 26 are connectedto the rods 25 and ex.

can be placed in the endsof all the pipes 1,0 Y if necessary.`A The rods25 are particularlyt adapted for raising the forms 2 when a section ofthe Wall has been inished. The forms 2 are. elevated to form anew-section of Wall. The forms 2 are connected to the The scaffoldwithin the wall is elevated by differential hoists 29. Eyes 30 areformed in the heads of the rods 19 and 4hooks 31 are caught in the eyes30, the hooks' 31 having a swivel connection with the hoists 29. hooks32 and the connection is made with the mast3 by means of a clevis 33which extends on the sides of the mast and a bolt .runs through the mastand through the "f."-'.c levis.` A plurality of holes 35 are made 1n themast so that thebolt 34 may be set at any desirable height. .The clevis33 and bolt 34 may be fixed at any desirable height and when the forms 2have been elevated drawing the scaffold upwardly far as possible bymeans of the differentialhoist, the clevis and bolt may be set at ahigher point and the operation of elevating the scaffold repeated asoften as desired. The same holes 35 may be used to hold the scaffoldwhen drawnto a desired position.

' A bolt 36 may be inserted in one of the holes 35 4under the scaffoldso that the scaii'old Willbe supported on the bolt 36. l

The same mast 3 is used to elevate the concrete or other material forbuilding the wall. A derrick is mounted on the mast and is adjustablethereon. Collars 37 and 38 are mounted on and secured thereon by 1nakingthe collars in two parts and clanipinglP ha@ collar has an extension 40,and each extension has a curved cavity therein. The lower collarsupports an arm 41 of the derrick. The arm 41 rests in the cavity in theextension 40. A rod 42 rests in the upper eXtension and is screwed intoa T-pipe 43'. The rod'42` and the arm 41 are held in the'supportingextensions 40 by a rod 44 and the The hoists are provided withy lowerend. A pulley hanger 49 for a p lley 50 is supported in the eye 47. Thederrick is further braced by a rod 48 which is screwed into the T-pipe43 and into a T-pipe 51. rI'he outer end of the derrick arm 41 issupported by a rod' 52 which is provided with a turn-buckle 53 and theupper end of the rod 52 isl secured in the T-pipe 43 by' a bolt 55. Thelower-gend of the rod 52 is connected to the arm 41 by a bent rod 54.The arm 41 is preferably made of pipe and the end of the rod 54 isthreaded and a nut 56 is screwed on the rod 54 and bears against the endof the pipe arm 41. The nut 56 can be used for adjusting the rod 52. Thematerial is delivered by a dumping bucket 57 and a cabler58 attachedthereto. The cable 58 runs over a'pulley 59 which is j ournaled in acarriage 60. The carriage 60 runs on the arm 41 by means of twoantifriction pulleys 61 which are ljournaled in the car'- riage 60. Thecable 58 runs over the pulley 50 and down by the mast 3 and over apulley 62 which is secured to the mast 3 at the bottom thereof and thenout of the wall tosome power for operatingthe cable. The carriage 60 isheld stationary by a pin 63 which is inserted through the arm 41 whilethe. bucket 57 is being elevated. When the bucket reaches the desiredheight, .the pin 63 may be removed and so that the carriage 60 may bebrought to a position over the forms for dumping the contents of thebucket in the forms 2. vThe bucket 57 may be locked stationary at anyheight desired. A pipe 64 is made rigid with the carriagel 60 and adog'65 is pivotally connected with a bracket 66 which is attached to thepipe 64. A slot iscut in the pipe 64 and as the cable 58 moves throughthe pipe 64 the dog 65 may be made to engagey the cable and bind thesame in the pipe 64. A suitable cord 67 may be connected to the handleof the dog and extended to ,a suitable position for operating the dog.The mast 3 may be braced by suitable guy rods 68. ltvwill be noticedthat the forms 2 are in sections divided both horizontally and.vertically. These sections are from two and a half to three feet deep.Several sections may be used in a day as they are simply placed oneabove the other and secured by suitable bolts. As soon as the walladjacent to the lowest section is cured or dried the lowestsection isremoved and placed on top of the upper form, and this can be donewithout interfering with the building of the wall. The truing of theforms is. accomplished` by strutting the scaffold to a fixed position.The struts 23 of the lowerlmema ber or platform are first struttedagainst the finished wall 1. This will retain the scaffold as a wholerigidly in a xed position rew gardless of the mast because each pair of:ii-ins, the one above and the one below, is f'orii'ied into a trusswhich is rigid. This 'having been done, the forms 2 are then adjusted totrue or plumb position relative to the lower member of the seaifoldwhich have already been adjusted to the completed Wall. The upper struts23 are used toy adjust the forms 2 without relation to the mast 3 whichis used merely to support the scaffold and striitting the wall-makingforms from said f "ca 'lold,

Q. A circular wall building apparatus comprising a central mast, ascaffold mov.

able vertically on said mast and provided with radial arms, means formoving said scaflold vertically, means for forming a vertical truss ofeach ail-in, means for strutting said arms against the circular wall andmeans for adjusting the forms relative to' said trusses for making thewall.

A circular wall construction apparatus comprising a central mast, ascaffold movable vertically on said mast and consisting of upper andlower members engaging said mast :ind radial arms secured to saidmembers, means for moving said scaffold vertically on said mast, meansfor strutting the lower member of said scaffold against the wall, andmeans 'for adjusting the forms to the upper member of the scaffold forliolding'and truing the forms.

'l.. A circular wall construction apparatus comprising a central mast, ascaffold movable vertically on said mast and consisting` of upper andlower circular members, meansfor spacing said members apart and meansfoiholding said members at a iXed relation to each other, radial arms'inpairs secured to said members, means for forming a truss of an upper anda lower arm, means for strutting said arms against the circular Wall andmeans for adjusting the forms to be lsupported against the upper arm formaking thel wall, and means for moving said scaffold vertically on saidmast.

5. A wall construction apparatus vcoinprising a central mast, a scaffoldmovable vertically on said mast and consisting of upper and lowermembers, a casting for each member having a central opening for saidmast, and having radial slots therein, means for spacing said castingsfixedly apart, radial arms secured to said casting in said slots, meanforming a vertical truss of an upper and a lower arm, and adjustablemeanscarried by said arms for strutting the lower member of the scaffoldto the Wall and for adjusting moldin forms to the upper member of saidsca old and plumbing said forms relatively to the completed portion ofthe wall.

6. A wall construction apparatus comprising a central mast, a scaffoldmovable vertically on ,said mast and provided .with upper and lowerradial arms, means for moving said scaffold vertically on said mast,means adapted to strut said lower arms against the'ivall, and means )foradjusting the forms for making the wall to said upper arms for holdingsaid forms plumb relative to said wall. p

7. A circular Wall construction apparatus comprising a eentralmast, ascaffold movable vertically on said mast, means f or adjusting saidscaffold against the circular wall for bracing and truing purposes,means for adj listing the forms for making the wall to said scaffold forbracing theform against the scaffold and plumbing the form relative tosaid Wall, a derrick carried by said mast, and means carried by saidderrick for delivering material into said forms.

In testimony whereof, I set my hand 1n the presence of two witnesses,this 21st day of April, 1914.

ALEXANDER Q. NASH. Witnesses A. L. JACKSON, W. P. TINSLEY.

